{"id":20840,"date":"2026-10-02T08:23:36","date_gmt":"2026-10-01T22:23:36","guid":{"rendered":"https:\/\/geoffreychen.com\/why-aluminium-foil-has-a-shiny-and-a-dull-side\/"},"modified":"2026-10-02T08:23:36","modified_gmt":"2026-10-01T22:23:36","slug":"why-aluminium-foil-has-a-shiny-and-a-dull-side","status":"publish","type":"post","link":"https:\/\/geoffreychen.com\/zh\/why-aluminium-foil-has-a-shiny-and-a-dull-side\/","title":{"rendered":"\u94dd\u7b94\u4e3a\u4ec0\u4e48\u4e00\u9762\u4eae\u3001\u4e00\u9762\u6697\uff1f"},"content":{"rendered":"<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/public-assets.geoffreychen.com\/wordpress\/articles\/why-aluminium-foil-has-a-shiny-and-a-dull-side\/0a2cf06a397824cbe489262b.jpg?w=1140&#038;ssl=1\" alt=\"\u94dd\u7b94\u4e3a\u4ec0\u4e48\u4e00\u9762\u4eae\u3001\u4e00\u9762\u6697\uff1f\" 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href=\"https:\/\/www.alufoil.org\/facts-and-properties\" rel=\"nofollow\">https:\/\/www.alufoil.org\/facts-and-properties<\/a><br \/><a href=\"https:\/\/www.reynoldsbrands.com\/products\/aluminum-foil\/heavy-duty-foil\" rel=\"nofollow\">https:\/\/www.reynoldsbrands.com\/products\/aluminum-foil\/heavy-duty-foil<\/a><\/p>\n<p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"Household foil gets its shiny and dull finishes during double rolling: roller-facing surfaces shine, while the two touching inner surfaces stay 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